2801219656 has 16 divisors (see below), whose sum is σ = 5324237100. Its totient is φ = 1381423104.

The previous prime is 2801219627. The next prime is 2801219677. The reversal of 2801219656 is 6569121082.

2801219656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2546817156 + 254402500 = 50466^2 + 15950^2 .

It is a super-2 number, since 2×2801219656² = 15693663122321516672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2397721 + ... + 2398888.

Almost surely, 2^2801219656 is an apocalyptic number.

It is an amenable number.

2801219656 is a deficient number, since it is larger than the sum of its proper divisors (2523017444).

2801219656 is a wasteful number, since it uses less digits than its factorization.

2801219656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4796688 (or 4796684 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 2801219656 is about 52926.5496324860. The cubic root of 2801219656 is about 1409.6643662338.

The spelling of 2801219656 in words is "two billion, eight hundred one million, two hundred nineteen thousand, six hundred fifty-six".